I purchased SC on a pretty decent drop.  Then it continued to drop.  And continued to drop.  It took about 4 hours to rise back up to a price where I could sell for 1% - 2% profit.  Since I'm waiting for my bank transfer $ I didn't have enough in my account to double down on the continued drop.  I have a question about the double down concept...should that be used as a last resort only?  Would I set my selling price to just get out of the trade at a slight profit?  I guess these question would depend upon what was happening in the market.

I wondered what changed between yesterday and today.  Yesterday SC was pumping all day long.  Today it was sluggish.  After looking at the rest of the alt coins I recognized that just about all of them were sluggish today.  So it is possible that today was just a sluggish day.  I remember reading on this forum where one person observed that most market dumps occur on the weekends.  Maybe I should be careful about trading on the weekends???  Or Sunday more so than Saturday.

Can anybody recommend a course that would teach Bitcoin trading? 

I'm still asking questions and still learning.

Scott